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| Registros recuperados: 65 | |
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| Brylinski, Jean-michel; Li, Luen-luen; Vansteenbrugge, Lies; Antajan, Elvire; Hoffman, Stefan; Van Ginderdeuren, Karl; Vincent, Dorothee. |
| Hydromedusae, morphologically resembling the Indo-Pacific leptomedusa Lovenella assimilis (Browne, 1905) (Cnidaria: Hydrozoa: Lovenellidae), are reported for the first time in both the eastern English Channel and the southern bight of the North Sea. Analyses of past zooplankton samples from a long-term monitoring program suggest that this non-indigenous species has been present in the eastern English Channel at least since 2007. Genetic analyses identified specimens as Eucheilota menoni based on nearly identical 18S ribosomal RNA gene, mitochondrial cytochrome oxydase subunit gene I (COI) sequences, and 16S Ribosomal RNA gene. Consequently, published morphological descriptions of L. assimilis and E. menoni were compared, and their species status is... |
| Tipo: Text |
Palavras-chave: Non-indigenous species (NIS); Jellyfish; Hydrozoa; Lovenella assimilis; Eucheilota menoni. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00285/39646/38145.pdf |
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| Postaire, Bautisse; Gelin, Pauline; Bruggemann, J. Henrich; Pratlong, Marine; Magalon, Helene. |
| Assessing population connectivity is necessary to construct effective marine protected areas. This connectivity depends, among other parameters, inherently on species dispersal capacities. Isolation by distance (IBD) is one of the main modes of differentiation in marine species, above all in species presenting low dispersal abilities. This study reports the genetic structuring in the tropical hydrozoan Macrorhynchia phoenicea α (sensu Postaire et al., 2016a), a brooding species, from 30 sampling sites in the Western Indian Ocean and the Tropical Southwestern Pacific, using 15 microsatellite loci. At the local scale, genet dispersal relied on asexual propagation at short distance, which was not found at larger scales. Considering one representative per... |
| Tipo: Text |
Palavras-chave: Assignment test; Brooding species; Cryptic diversity; Hydrozoa; Microsatellites. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00399/51011/51795.pdf |
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| Vervoort, W.. |
| A description is given of a corymorphid polyp, Corymorpha tomoensis Ikeda, 1910, collected during an expedition of the National Museum of Natural History, Leiden, The Netherlands, to the Indonesian island of Ambon. This is the first record of a polyp of the genus Corymorpha M. Sars, 1835 from Indonesian waters; corymorphid medusae were collected during the Siboga Expedition and described by Maas (1905) as Euphysora bigelowi; the polyp of that species was subsequently reared in the laboratory (Sassaman & Rees, 1978) and identified as a species of Corymorpha. Species now classified in Corymorpha M. Sars, 1835 are briefly reviewed and their status and distribution discussed. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Hydropolyps; Corymorpha; Taxonomy; Geographical distribution; 42.79. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/311951 |
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| Peña Cantero, A.L.; Vervoort, W.; Watson, E.J.. |
| Three new species of Anthoathecatae (Cnidaria, Hydrozoa) of the rare genus Clathrozoella Stechow, 1921, Clathrozoella abyssalis spec. nov., C. bathyalis spec. nov. and C. medeae spec. nov., are described from New Zealand and Antarctic waters. Along with the previously known C. drygalskii (Vanhöffen, 1910) the genus Clathrozoella now numbers four species. Details of the skeleton, hydranths, nematocysts and gonophores are described and discussed, as is also the position of the newly established family Clathrozoellidae. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hydrozoa; Anthoathecatae; Clathrozoellidae; Clathrozoella; Antarctic; Benthos; New species; 42.79. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/220315 |
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| Ramil, F.; Vervoort, W.; Ansín, J.A.. |
| The study of a part of the material collected by the French oceanographic expedition "SEAMOUNT 1" made it possible to identify 21 species and one subspecies of hydroids of the families Haleciidae (4 species), Aglaopheniidae (7 species), Halopterididae (3 species), Kirchenpaueriidae (2 species and one subspecies) and Plumulariidae (5 species). Of these species, 10 have an Atlantic-Mediterranean distribution, 6 are cosmopolites, 4 are known from the north-eastern Atlantic, near to the area studied, and only one, Pseudoplumaria sabinae Ramil & Vervoort, 1992, is momentarily only known from Gorringe and Ampere Banks. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Haleciidae; Plumularioidea; SEAMOUNT 1; North-Eastern Atlantic.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317877 |
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| Medel, M.D.; López-González, P.J.. |
| The present study is a first attempt to comparing the hydroid faunas of the various Zoogeographie areas of the Atlantic Ocean. We restricted ourselves to species of the orders Antho- and Leptomedusae, of which 1050 species were taken into account. The classification of zoogeographic areas used follows Ekman and Briggs, with slight modifications; thus, the Strait of Gibraltar is here considered as a separate zoogeographic area due to its character of a transition zone between several areas in the Northeastern Atlantic Region. Species were arranged into Zoogeographic groups to compare the faunal composition of the various Zoogeographic areas. The Dice similarity index was used for each comparison. The fauna of North-eastern Region can be split into three... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hydrozoa; Zoogeography; Faunal affinities; Atlantic Ocean.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317893 |
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| Migotto, A.E.; Calder, D.R.. |
| An account is given of Sertularia vervoorti spec. nov., a small leptothecate species collected in coastal waters of southeastern Brazil. Specimens were found on brown algae, collected at depths of 15-20 m on the inner continental shelf off Espírito Santo state. This hydroid resembles Sertularia tumida Allman, 1877, S. linealis Warren, 1908, and S. longa Millard, 1958, but differs from these and other species of the genus in having an unusual bulge around the hydrothecal wall just distal to its insertion with the hydrocaulus. The colony form of S. vervoorti is more compact than in these species, and gonothecae are annulated rather than smooth as in S. linealis and S. longa. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Hydroida; Sertulariidae; Sertularia vervoorti; Systematics; Distribu- tion; Brazil.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317622 |
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| Gravier-Bonnet, N.. |
| The present collection was made on the south and west coasts of Madagascar between 90 en 465 meters depth and includes 17 species of calyptoblastic hydroids, belonging to six families: Campanulinidae, Lafoeidae, Campanulariidae, Syntheciidae, Sertulariidae and Plumulariidae. Twelve are recorded for the first time from Madagascar, while three of these are new for the Indian Ocean and one is described as new (Tulpa costata). Endemic species represent half of the collection and are numerically more important than cosmopolitan, tropical-indopacific, and southern species. A comparative study of bathymetrical characteristics of species from Madagascar and around the world allows to distinguish three groups of species: deepsea species, which have a very wide... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coelenterata; Hydrozoa; Madagascar; New species; Revision; Halicornaria ferlusi Billard; Temporary epizoism; 42.72. |
| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/323945 |
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| Vervoort, W.. |
| Twenty-eight hydroid species are recorded from the eastern Mediterranean and the northern part of the Red Sea, all material originating from the collections of the Museum of the Zoological Institute, Tel-Aviv University. The collection also included four species that could only be identified to generic level. Though the majority had previously been recorded from either the Mediterranean or the Red Sea, some constitute the first definite record from Israeli coastal waters. All material has been redeposited in the Tel-Aviv collection; slides and some duplicate samples are in the collections of the National Museum of Natural History (Nationaal Natuurhistorisch Museum, now also incorporating the Rijksmuseum van Natuurlijke Historie), Leiden, the Netherlands. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Hydroida; Eastern Mediterranean fauna; Red Sea hydroid fauna; 42.72. |
| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/318185 |
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| Peña Cantero, A.L.; Vervoort, W.. |
| The type material of Oswaldella billardi Briggs, 1938, has been re-examined and a complete description and figures are presented. The study of that material has allowed to reconsider the systematic position of all the material previously assigned to O. billardi and to determine that part of it belongs to another species. Since it is clearly different from the remaining species of the genus, it is described as Oswaldella erratum spec. nov. Resumen: Se ha revisado y redescrito el material tipo de Oswaldella billardi Briggs, 1938. Su estudio ha permitido reconsiderar la posición sistemática de todo el material anteriormente asignado a O. billardi y, así, determinar que parte del mismo pertenece a otra especie. Ya que dicha especie es claramente diferente de... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Hydroids; Oswaldella; New species; Antarctic; 42.72. |
| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/318245 |
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| Marques, Antonio C.. |
| The systematics of Hydrozoa is considered from the viewpoint of logical consistency between phylogeny and classification. The validity of the nominal taxon Hydroidomedusae (including all groups of Hydrozoa except the Siphonophorae) is discussed with regard to its distinctness and inclusive relationships. In general, phylogenetic systematic evidence suggest that the use of the term Hydroidomedusae is inappropriate given our current level of understanding. It is concluded that no new, or resurrected, names are necessary before or until a broader phylogenetic revision of the Hydrozoa is accomplished. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hydrozoa; Hydroidomedusae; Classification; Nomenclature; Taxonomy. |
| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/534381 |
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| Svoboda, A.; Cornelius, P.F.S.. |
| The eleven species of the hydroid genus Aglaophenia Lamouroux, 1812, recorded from European and Mediterranean waters are redescribed in detail and aspects of their biology discussed. A section on the identification of the European and Mediterranean species and a comprehensive glossary are included. Comments are given on type specimens, reproduction, ecology and distribution and, briefly, on other biological aspects. Certain of the species occur further north than previously realized. A. acacia Allman, 1883 and A. parvula Bale, 1882, are newly recorded from British waters, the latter being almost new to Europe. It differs only minutely from the widely-known A. pluma. A. kirchenpaueri (Heller, 1868) is added to the Irish faunal list, and has only recently... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Plumulariidae; Aglaopheniinae; Aglaophenia; Glossary; Identifi- cation key; Taxonomy; Systematics; Linnaeus; European fauna; Mediterranean fauna; Type specimen designations.; 42.72. |
| Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/317641 |
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| Registros recuperados: 65 | |
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